diff --git a/generate-DH-parameters.sh b/generate-DH-parameters.sh
index 3529cd1..9c03de6 100755
--- a/generate-DH-parameters.sh
+++ b/generate-DH-parameters.sh
@@ -135,7 +135,7 @@ trim() {
 
 get_openssl_version() {
 
-   OPENSSL_VERSION="$(openssl version|awk '{print $2}' | grep -o -E "[0-9]+\.[0-9]+\.[0-9]")"
+   OPENSSL_VERSION="$(openssl version|awk '{print $2}' | grep -o -E "[0-9]+\.[0-9]+\.[0-9]+[a-zA-Z]?")"
 
    OPENSSL_MAIN_VERSION=`echo $OPENSSL_VERSION | cut -d '.' -f1,2`
    OPENSSL_MAJOR_VERSION=`echo $OPENSSL_VERSION | cut -d '.' -f1`